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121quiz4Tpractice

121quiz4Tpractice -

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Practice Quiz 4 (Tuesday) Dr. Heyns Chemistry 121 Week of Autumn Quarter 2006 October 30, 2006 Time: 20 min Points: 30 Name of student:__________________________________ Name of TA:______________________________________ (Some physical constants and an equation are given at the end of the quiz.) 1.(8 pts) The frequency of electromagnetic radiation required to promote an electron from n = 2 to n = 4 in a Bohr hydrogen atom is __________ Hz. a) 4.1 × -19 10 b) 6.2 × 14 10 c) 5.4 × -19 10 d) 8.2 × 14 10 e) 4.1 × 19 10 1
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2. (6 pts). What is the de Broglie wavelength (m) of a 2.0 kg object moving at a speed of 50 m/s __________? a) 6.6 × -36 10 b) 1.5 × 35 10 c) 5.3 × -33 10 d) 2.6 × -35 10 e) 3.8 × 34 10 3. (4 pts) The __________ quantum number defines the shape of an orbital.
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This note was uploaded on 05/14/2009 for the course CHEM 121 taught by Professor Wyzlouzil during the Fall '07 term at Ohio State.

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121quiz4Tpractice -

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